Copper Alloy (UNS C95520)

Topics Covered

Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations


Aluminum bronze alloys have an attractive golden color and better corrosion resistance than brasses or tin bronzes.

For many applications, copper UNS C95520 replaces C63020 alloy as it is available in tube form, which provides economic cost savings to the customer.

The following datasheet discusses the chemical composition and properties of copper UNS C95520.

Chemical Composition

The chemical composition of copper UNS C95520 is given in the following table.

Element Content (%)
Copper, Cu 74.5
Aluminum, Al 10.5-11.5
Nickel, Ni 4.2-6
Iron, Fe 4-5.5
Manganese, Mn 1.5
Zinc, Zn 0.3
Tin, Sn 0.25
Cobalt, Co 0.2
Silicon, Si 0.15
Chromium, Cr 0.05
Lead, Pb 0.03

Physical Properties

The following table discusses the physical properties of copper UNS C95520.

Properties Metric Imperial
Density 7.53 g/cm3 0.272 lb/in3

Mechanical Properties

The mechanical properties of UNS C95520 copper alloy (TH04-temper) are tabulated below.

Properties Metric Imperial
Tensile strength 862 MPa 125 ksi
Yield strength 665 MPa 95 ksi
Elongation 2% 2%
Brinell hardness 262 262

Thermal Properties

The thermal properties of UNS C95520 copper alloys are outlined in the following table.

Properties Metric Imperial
Thermal expansion coefficient 16.2 ppm/°C 9 ppm/°F
Thermal conductivity 42 W/mK 24 BTU in/hr.ft².°F

Other Designations

Equivalent materials to UNS C95520 copper alloy are the following:

  • AMS 4881
  • ASTM B271
  • SAE J462
  • SAE J461
  • ASTM B505
  • ASTM B30


Copper UNS C95520 finds application in:

  • Rock bit bearings and bushings
  • Off-highway truck bushings
  • Marine pump parts
  • Military aircraft components and tank track bearings,
  • Cams, shafting and valve balls, cryogenics, and drill guide bushings.

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